Line of symmetry

Front

What is a line of symmetry?

Back

A line of symmetry is an imaginary line that divides a shape into two identical parts that are mirror images of each other.

Front

How many lines of symmetry does a circle have?

Back

A circle has an infinite number of lines of symmetry.

Front

How many lines of symmetry does a square have?

Back

A square has 4 lines of symmetry.

Front

How many lines of symmetry does a rectangle have?

Back

A rectangle has 2 lines of symmetry.

Front

What is the line of symmetry for a butterfly?

Back

A butterfly has 1 line of symmetry that runs vertically down the center.

Front

Can a shape have no lines of symmetry? Give an example.

Back

Yes, a shape can have no lines of symmetry. An example is a scalene triangle.

Front

What is the relationship between lines of symmetry and congruence?

Back

Lines of symmetry indicate that the two halves of a shape are congruent.

Front

How can you determine if a shape is symmetrical?

Back

You can fold the shape along a line to see if both halves match perfectly.

Front

What is rotational symmetry?

Back

Rotational symmetry is when a shape can be rotated around a central point and still look the same at certain angles.

Front

How many lines of symmetry does an equilateral triangle have?

Back

An equilateral triangle has 3 lines of symmetry.